Roller perforating-machine and strippers therefor



APPLICATION FILED AUG. II. 1920- Patented Jan. 18, 1921.

3 SHEETS-SHEET 1.

5 m, m, f m 1/ n9 80 n 1 n R a r r 0 w J p 1 If. /2 y i fihv Mines, 4?

F. ROGERS AND A. W. GREGORY.

ROLLER PERFORATING MACHINE AND STRIPPERS THEREFOR.

APPLICATION FILED AUG 11, I920.

1,365,855. Patented Jan. 18,1921.

3 SHEET SSHEET 2.

' mfllcpflcfl: Inveni'on flogging, .li'rnold William 'rcyor'y 6 By lfieir Jilly,

APFUCAIION FILED AUG ll I920.

Patented Jan. 18, 1921.

3 SHEETS-SHEET 3- J, r 1 .7 m; 2. n0 1 5 n mm m? m4 Z 8 m 9 B i UNITED srznps PATENT omen.

FRANK ROGERS, OF SHEFFIELD, AND ARNOLD WILLIAM GREGORY, OF LONDON,

, ENGLAND.

ROLLER PEBFORATING-MACHINE AND STRIPPERS THEREFOR.

Specification of Letters Patent. Patented J 18 1921 Application filed August 11, 1920. Serial No. 402,919.

To all whom it may concern Be it known that we, FRANK Rooms, a subject of the King of Great Britain, residing in Shefiield, England, and ARNOLD WIL- LIAM GREGORY, a subject of the King of Great Britain, residing in London, England, have invented certain new and useful Improvements in and Relating to Roller Per; forating-Machines and Strippers Therefor, of which the following is a specification.

This invention relates to roller perforating machines designed more particularly for treating tinned shoet iron boxes and/or other coated sheet metal articles for facilitating the removal of the coating and it refers to apparatus of the kind in which articles are simultaneously compressed or flattened and perforated and torn by passing them between rollers rovided upon their peripheries with radially disposed spikes or knives or the like.

The present invention has for its object certain improvements in a paratus of this type designed to secure t 1e stripping or cleaning of the flattened and perforated articles from the spikes so that any clogging thereof with the consequent diminution in the elliciency of the apparatus is avoided.

According to thisinvention we provide adjacent to the contiguous points of the peripheries of the rollers, fixed or moving bodies which are so disposed or shaped that the outer surfaces thereof, while they leave the full or substantially the full effective length of the spikes exposed at this point gradually advance toward the circle described by the points of the spikes until they lie outside thereof and the spikes passing behind are cleared of the articles ready for further action.

In order that the invention may be the better understood drawings are appended in which Figure l is a sectional view of a machine embodying a form of the present invention.

Fig. 2 is'a sectional plan.

Fig. 3 is a sectionalplan showing amodified form to that shown in Figs. 1 and 2.

Fig. 4 is a sectional view showing a further modification.

Fig. 5 is a plan.

ig- 6 s a. Pl to a arge s a h i more clearly certain details of the arrangement shown in Figs. iend 5.

Referring to the accompanying drawings pinion mounted upon a pin carried by a frame a the pinion f gearing with a pinion mounted upon a driving shaft f supported in bearings carried by frame a and provided with a driving pulley f Eccentrically disposed with regard to the drums f, f, are cylindrical bodies g, g suitably perforated to permit the ready passage of the pins upon drums f, f the ends of said bodies g, g bemg provided with openings 9 g for the passage of the shafts of the said drums. The ends of the bodies 7", f have se cured to them rings 9?, g recessed upon the face to engagesupporting disks g whereby the bodies g are revolubly supported from the frame a. The bodies 9 g are geared together-by means of the gears h, k the gear 11. being engaged by a pinion it upon the aforesaid drivii'ig shaft f". The gearing so selected that the peripheral speed of the bodies 9 g is such that the spikes do not foul the opening in the said bodies.

As the drums f f and the bodies 9 g rotate the spikes upon the said drums which are PXOJGCtlIlg at the contiguous points of the peripheries of the bodies 9 g are gradually drawn into the bodies and any articles which may be thereon are stripped off.

As an alternative arrangement to that just described we may employ that shown in Fig. 3. In this case the drums f f are overhung upon shafts k if supported from one of the side members of the frame a while the bodies 57 g are similarly supported from the other side member of said frame. Suitable gearing, such as 7c on the shafts 7L2 k is provided for operating the drums f f and bodies 9 g at the required speeds. Any other method of mounting and operating the drums f f and bodies g 9 may be employed it being understood that the peripheral speeds of both drums and bodies must be the same or such as will enable the spikes to be drawn inside the bodies 9 without their fouling the openings .provi ed for them in said bod es. Instead of the spikes projecting radially in a straight line from the drums they may be inclined to one side or the projecting portion thereof may be turned or bent to one side of their plane of rotation.

In the arrangement hitherto described the moving stripping member has been driven by means of gearing. We may however provide for the rotating stripping member to be actuated by the drums themselves. Such an arrangement as that just referred to is shown in Figs. l, 5 and 6 in which a indicates rings of larger diameter than the drums f which rings are placed upon the drums between the lines of spikes or knives at. The rings 71,, however, are freely mounted on the drums and are driven by frictional contact between the contacting points of the exterior of the drum and the interior of the ring.

In order to limit the side play of the end rings a fixed frame is provided which is secured to the frame a of the machine, or alternatively the side of the hopper to may be extended for this purpose, as shown in Figs. 4c and 5. The hopper may also be extended at the ends as shown at 4.0 Fig. l inclosing the rings and spiked rollers and forming a safety guard.

While the attachment of the spikes to the drums may be effected in any suitable man'- ner in Figs. 4; to 6 we have illustrated an arrangement for securing the spikes or knives in the drum and which presents the advantage that while the said spikes may be readily placed in position and secured, it is possible in the event of damage to the said spikes to readily remove same and substitute fresh ones without removing the roller or the strippers. In the figures referred to the spike which is indicated by a is shaped as shown, that is to say it is of rectangular cross sectional outline. To secure the spikes the drums are provided with openings of rectangular cross sectional outline and when the spike has been placed in said opening it is secured by means of a gib-headed key By this means not only are the spikes readily secured in the drum and their effective lengths readily adjusted, but should it be required to remove any of said spikes the keys may be drawn releasing the spike. Obviously the same method of fixing the spikes or knives could be applied to a spike of circular cross-sectional outline, a key having a cross-sectional outline of suitable shape being provided.

Where keys are employed for securing the spikes the stripping members would obviously be so disposed that they prevent the heads of the keys from coming into contact with the bodies upon which the spikes or knives are acting.

To further increase the tearing action of the spikes the drums may be driven at difo ferent relative speeds the speeds of the dri moving bodies 9 y, where such are employed, being correspondingly varied. The variation in the speed of the drums would, however, only be employed where the spikes of one drum are located in a different plane to the spikes of the other.

Claims 1. A roller perforating machine and strip pers therefor comprising, rollers arranged to cooperate with each other for compressing articles therebetween and provioed with apertures in the peripheries thereof, drums cooperating with the rollers and provided with projections on the peripheries thereof. means for rotating the rollers, and means for rotating the drums; the projections of the drums passing through the apertures of the rollers for perforating the articles compressed between the rollers and stripping them from the rollers when the rollers and drums are rotated.

2. A roller perforating machine and strip-- pers therefor comprising, rollers arranged to cooperate with each other for compressing articles therebetween and provided with apertures in the peripheries thereof, drums located within the rollers and provided with spikes on the peripheries thereof, the rollers being arranged eccentrically relative to the drums, means for rotating the rollers, and means for rotating the drums; the spikes of the drums passing through the apertures of the rollers for perforating the articles compressed between the rollers and stripping them from the rollers when the rollers and drums are rotated.

3. A roller and perforating machine and strippers therefor comprising, rollers arranged to cooperate with each other for compressing articles therebetween and provided with apertures in the peripheries thereof, drums located within the rollers and provided with spikes on the peripheries thereof, the rollers being arranged eccentrically relative to the drums, means for rotating the rollers, and means for rotating the drums; the spikes of the drums passing through the apertures of the rollers for perforating the articles compressed between the rollers and stripping them from the rollers when the rollers are rotated; and the rollers and drums being so rotated as to permit the spikes of the drums to pass through the apertures of the rollers without fouling.

l. In a machine of the character described, the combination of, adjacent rollers operatively arranged for bringing the peripheries of the rollers contiguous for re ceiving articles for compression therebetween when the rollers are rotated, the peripheries of the rollers being provided with apertures therein; drums located within the rollers and provided with projections on the peripheries thereof; means for rotating the rollers; and means for rotating the Hill drums; the rollers being arranged relative to the drums to permit the projections of the drums to pass through apertures of the rollers cooperating therewith when the peripheries of the rollers are contiguous during rotation of the rollers and drums.

5. In a machine of the character described, the combination of, rollers opera tively arranged for bringing the peripheries of the rollers contiguous for receiving articles for compression therebetween when the rollers are rotated, the peripheries of the rollers being provided with apertures therein; drums located Within the rollers and provided with projections on the peripheries thereof; means for rotating the rollers; and means for rotating the drums; the rollers being arranged eccentrically relative to the drums for bringing the peripheries of the drums contiguous to the inner circumferences of the rollers during rotation of the rollers and drums at the time when the peripheries of the rollers are contiguous, and for permitting the projections of the drums then to pass through apertures of the rollers coopcrating therewith.

In testimony whereof we afiix our signatures in the presence of two witnesses.

FRANK ROGERS. Witnesses:

JOHN 'Cnoss, W. HASTINGS. ARNOLD WILLIAM GREGORY. Witnesses:

A. W. Column, 0. BEHRENDT. 

